Answer:
Option A- It allows for genetic variation among organisms.
Meiosis is important for organisms since it allows for genetic variation among organisms.
Further Explanation:
Mitosis and meiosis are two different types of cell division. Mitosis produces two daughter cells which are identical to each other. While in meiosis “four haploid” daughter cells are produced. It is a highly systematized cell division process as the spore or gamete produce must comprise one member of each homologous pair of the chromosomes. The crossing over results in genetic exchange between the non-sister chromatids of “homologous chromosomes”. Meiosis plays a significant role during the alternation of generation in plants and acts as a bridge between the sporophyte stage and gametophyte stage. During meiosis cell division, haploid gametes or spores are produced whereas mitosis produces daughter cells which are genetically similar to each other. During meiosis the pairing of homologous chromosomes occurs by synapsis which separate during anaphase.
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Answer Details:
Grade: High School
Subject: Biology
Chapter: Mitosis and Meiosis
Keywords:
Mitosis, meiosis, homologous pair, haploid, gametes, spores, four, synapsis, gametes, daughter cell, plant, cell division, crossing over.
Answer: True
Explanation: Slash and burn deforestation increases the amount of carbon-di-oxide as a result of combustion. The burning process releases carbon-di-oxide into the atmosphere this depletes the amount of the oxygen in the atmosphere. The trees that are cut down liberates oxygen during photosynthesis, there won't be oxygen from the deforested trees.
c. destroyed
b. absorbed
d. reflected
Answer:
reflected
Explanation:
Explanation:
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As alluded to above, the CTD undergoes dynamic changes in phosphorylation during transcription elongation. Very simply, the CTD is phosphorylated on Ser2 by CDK9, while Ser5-P is removed by Ser5 phosphatases, and, toward the end of genes, the CTD is dephosphorylated by Ser5 and Ser2 phosphatases.
Phosphorylation of the CTD of RNA polymerase II occurs during the initiation phase of transcription. It 'activates' the RNA polymerase II and is crucial for the transition to the elongation phase.
The phosphorylation of the CTD (C-terminal Domain) of RNA polymerase II happens during the initiation phase of transcription. This process is crucial for the transition from the initiation to the elongation phase of transcription.
Specifically, when the RNA polymerase II prepares to read the DNA strand and start RNA synthesis, the CTD, a part of the RNA polymerase II which is composed of many repeats of a seven-amino-acid sequence, undergoes phosphorylation.
The phosphorylation essentially 'activates' the RNA polymerase II and aids in the recruitment of various factors necessary for effective and correct transcription.
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